roberts



G. B. RBERTS FUEL ECONOMIZER April 27 1926.

fatented Z7, 1926.

IF l 6C E. j

FUEL ECONOMIZER.

Application filed June 13, 1925 Serial No. 36,987.

To all whom t may concern Be it known that I, Gnoncn B. ROBERTS, acitizen of the Unit-ed States of America, and a resident of Chicago,county ofCool, and State of Illinois, have invented a new and usefulImprovement in Fuel Economizers, of which the following is aspecification. V

rlhis invention relates to those fuel burner attachments which are knownas economizers, and is applicable especially to gas ranges and the like.The main objects of the invention are to provide an economizer adaptedto reduce the amount of fuel necessary to accomplish a given availableheating effect; to enhance the heating effect of a given amount of fuel;to throw the. gaseous fuel into a state of violent agitation adjacent tothe point of discharge to the burner orburners; to. provide inthepathway of the fuel means formed and adapted to pro-y duce a spiralwhirling movement of the gas; to provide. a nozzle-like member of thischaracter with adjusting means adapted to regulate the rate ofdischarge; to provide in a gas range admitting air to the fuel before itreaches the burner means operable by the flow of gas to agitate and minthe gas and air, and to provide such means of simple land durable formadapted for ready manufacture at low cost and capable of readyapplicationl both for new equipments and for old installations. Y

An illustrative embodiment of this invention is shown by theaccompanying drawings, in which:

Fig. l is a fragmentary plan of an ordinary gas burning kitchen rangeshowing the right-hand front corner, adjacent to which the attachmentembodying this invention is dispose-d.

Fig. 2 is a greatly enlarged horizontal axial section through theattachment shown at the lower right hand corner of Fig. l.

Fig. 3 is mainly a cross section on thc line 3-3 of Fig. 2.

Fig. flis a perspective view of the nozzle and the associated screen asviewed from the front and right of Fig. 2.

Fig. 5 is vmainly a horizontal axial section showing a modifiedconstruction and arrangement of parts to be used one for each burneroutlet, as at E on Figs. l and 5, instead of or `supplementng the onecom Y mon econcmizer shown in Figs. i and 2. fn

this instance there be a common manual control valve in the pipe section2 instead of one for each branch as will be understood. Y v

In the construction shown in the drawings, Figs. l to l, the economizerl is constructed in the form of an elbow member inserted in the gaseoussupply pipe 2, which supplies the burners, vnot shown, on the range 3,which burners are` fed through the several manual control valves 4;.

ln order to facilitate understanding of the invention, it may beobserved at this point that the operation of the economizer l imparts tothe incoming fuel, received through the pipe section 2', a high state ofagitation as it passes into the section 2,

from which it is delivered through the branch pipes 5 to the burners.

TNit-h this in view, the economizer is provided with a fixed coaxialrestricting member or nozzle 6 in which is mounted a conical rotaryagitator 7. rlhis nozzle 6 is disposed with its wide end toward theVsource of fuel and with its narrow endeX- tending into the pipe 2. Thebase of cone 6 is cylindrical and fits snugly in the pipe 2 where it isheld rigidly by friction. The rotor kmember 7 is providedv with spiralvanes 8 on its conical face whereby the passing fuel reacts to impartrotation, as a result of which the fuel is violently agitated and causedto enter the tube 2 with a rapid whirling vor spiral motion. The elbowmember is threaded at l and l to admit the pipes 2 and 2 respectively.

In order to enable the attendant to adjust the agitator? and alsoregulate in a nieasurethe flowv of fuel through the nozzle 6, the cone 7is mounted rotatably on the end of a longitudinally adjustable shaft 9,the adjacentend of which is threaded at 10 to fit in a. supporting crossbar w11 at j the base of the nozzle 6.

rlhe other end of the bar 0 extends through a threaded removable supportl2 at the opposite end or corner of the elbow meniber and projects,rwhere its slotted end 9 is accessible for adjustment by means of ascrew driver,`upon removal of the cap 13. The support l2 is .made insections so as to provide for packing 14.' A screen 15 is disposed4across the base of said cone 6 aswill be understood. The endsof bar iland the rim of screen l5 are secured to the base of cone G, as cyineansof solder.

fn operation, when a burner ie started the rush of i; past the rotor Tcauses it to spin on its axis. it a choking' eti'ectis desired i t thispoint5 the screw 9 is turned clockwise, that is to Say, inwardly andvice versa.

I have experimented extensively with kindred devices and have caused athorough test to he made ot this device on a standard gas stove, mainlyto determine the volume ot gas passed throuc'h the pipe to a hurnertirstl without. the device and then with it'. The temperature was tahenas to the heat gene `ated with and without this economizer. Accuraterecord was kept as to time` volume ol: gas and the temperature, with andwithontI the device. The economy shown was substantial and moetsatisfactory.

Referring to the emhodin'ient shown in Fig. the econoniizer herereferred to hy nume `al 2l is attached to the indivic ual burner tuhe 5at its junction. with the inain supply t-uhe 2. ln this instance. 4the`guide cone 21, rotor 22, adjusting' screw "23, paci;- ingr El, andpackingl holder 25 are suhstantially similar to the correspondine partsrespectively shown in Figi'. ii. and function in Substantially the sameway, hut'. in this instance the econoiniizer is individual to thecorresponding hurncr instead ot heine' coininon to a plurality othurners. Moreover, in this instance the tuhe 5 is provided with aplurality otA small air inlet openings 26, adjacent to the discharge tipot the guide. cone 2l, wherehy air hecomes thoroughly mixed with thewhirling` fuel so that when the air and gas mixture reaches the 'ournerit is in a state ot agitation and thoroughly mixed.

In attaching this econoinizer to old installations. or to new rangesinade up without any econoinizcr, it may he noted thatthere is always asupply pipe that cornes in 'from the gas main, and connected to the pipeis an L at the corner or :front ot the stove.. lisuallv the sir/ie ot?the original pipe ahout ot au inch it'or supplying gras to six hurners`in trout ot the stove.

In installing' this device l disconnect the L originally there andinsert theeconomizer L in piace of it'. which is the .same size. .Bvreason ot the adjustment Afeature I can reducel the volume of gras andincrease the preseure hccause the pipe size ha lv: of it is unich largerthan the adjustment aperture which itY passes through. Yt have toundthat a greet, deal ot gran is wanted vtor lack ot proper ciiinihustionland l' attribute that to lach. of las agitation or mixture ot' the raswith the air. This device heine' restricted at the point'v ti givesadditional force :is the passes out. That. creates; a commotion in thegas as it. passes through and into the pipe and comes; into contact withthe direct supply tor each hurner. 'this device auses a thorough mixtureot eas: and air. so that every particle o't. is utili/:ed and consumed.Another advantage ot the adjnstahility Jfeature is that in the event otlthe pressure getting very low, the .screw t) and agitator 'i may hedrawn hac: and so eive a larger supply ot' gas, how lar the screw isturned hai-li.

Ailthoug'h only two Specitic emhodiments ot thi.' invention are hereinshown and described, it to he understood that no attempt has heen madeto show alt praz'- ti al emhodiments. and that some oi the dctails ofthe constructions .shown and dcscrihed may he altered or omitted withoutdepartiinrl from the spirit ot thisl invention as detined hy thefollowing' claims.

I claiin: l. t'uel eeononiizer comprising' a tutu'.- r memhcr throughwhich the incl is conu'ted.: said niemhcr havinir a ti'rhine rei'tionrotor mounted therein adapted tor actuation hy the tion' ot' fuel. and.said meinlwr having' a lateral aperture and sealing' in aus theretor,with a screv.'

unted therein `tor adjustment ol lll() rotor to more or less restrictthe t'nel pas-A Sag'ei'ay, according to the .settingA oil said se 'ewmemher.

A. Vfuel economizer comprising' a tuhulal meniher through which the tuelconducted, Said men her having' a r xaction rotor: mounted thereinadapted tor actuation liv the tlow ol fuel, and .Laid niemher ha ving alateral aperture and sealing' means theretor. with a screw mountedtherein 'tor adiust'aient ot said rotor to more or less rc im strict.the Yl'uel passaeeway5 according' to the setting ol the screw, saidmemher havia;r a restricted portion adjacent' to .said rotor and a crossmcmher adjacent thereto with a threaded aperture 'for .said screw.

Il. il Ytucl economizer comprising a tuinilar mclnher throueh which the,t'ucl pa:', e:-1, said meiahcr having' restrictingv nieamf and arotar;v reaction agitator adjacent theretot wherehy the passage ot titelpast'. said :ze'iim;

t'ator rotates the same, and therein' throws', the 'tuel into spiralmovement and cauces its4 thorough agitationl said rotor having4 a tixcdSupportingV shaft ou one end ot' uj'hirV-h ity is mounted, which shafti:-: threaded tor adjustment',- and projet-tr; throuc'h a snug aperturein the wall ot' .said memhev toiaccess.

Signed at i925.

"hicaio this 2nd i'w ot' rtune GEORG .lil li.

incinher f according to 70

